Aluminium system car side wall structure with novel sectional form

The utility model relates to an aluminium system car side wall structure with novel sectional form belongs to the automobile body structure design field. Including entablature, B post and threshold beam, entablature, B post and threshold beam constitute automobile body side wall structure, entablature and B support connnection, the B post is connected with threshold beam, entablature, B post and threshold beam form by the aluminum alloy extrusion, entablature, B post and threshold beam all are provided with horizontal strengthening rib, the entablature is the aluminium alloy that the cross section is " day " font, the B post is the aluminium alloy that the cross section is " mesh " font, threshold beam is the aluminium alloy that the cross section is " day " font. The advantage lies in: novel structure, simple, the welding is convenient, and is effectual. Can improve white automobile body side wall structure's rigidity effectively, reduction car body side wall upon impact side wall structure protects passenge